New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1887-08-12
SCIENCE IN MANY FORMS.
PAPERS READ BEFORE THE ASSOCIATION.


alton for the Advancement of Scepoe was character
lied b, the quiet pansskire tnt torlous system Vi
scientific bodies There were some hhe exceptions.
and chief among these must be elassed lhe TWO P"pe
| on the Economics OF Food " IN the secIon %
oro,n;c scepco and stati .tcs. These occupied the
entire time of the section, ample opportunity being
gwen for discussion.
| In Section A, which embraces ma thematlcs aho
ASTRONOMY the presiding officers we're rue vice.
chairman Professor j. X. Eastman. OF the ooserva-
tory at Washington, and the secretary Professor
Henry NJ Pail, also OF Washington The matheba-
tcians were decidedly in the majority, ana one OF
the mathematical subjects was Sn III dafkeheu
room b, means of stereopticon. This paper was
by Professor Wilson, OF Princeton. The subject was
"A completed nomenclature for the piIhcpai
roulcttes" but it had nohl1g 10 do with gamonHS,
and only Indicated special class oil geoinc''io'
curves OF great beauty and compleXitv' Inc cApo'
tation OF seeing something out OF the common rouno
great that the large room was uieu anu many
ladies were present
In the mornin, there fewer people among 'ne
audience because possibly the titles OF the supjec'
were less al urn Z. Papers were read On CoeihcenIs
of coimation and exure of transit instruments win
broken tubes" by Jefferson L. Kershner oil Ian
easter Penn on The effect OF some paculiarIties OF
personal eluatlOn." by the vlce-presiueh' VI '"e
section another on the same snOJcct ny "o"'y
Fironhar of the Coast Survey, Wasnin ;lph on
" The geome;ric meaning OF singular soiut'ons u
di0erential equations of the second and thifd orues
by Professor Henry b. Fine, OF Princeton; GU Inc
sibilty of objects conditioned by their MAGNITUDE
and brightness with application 10 tho t"eo.S y,
| telescopes" by William Hardness OF the N1'al
| Observ atory on " Tne logical theories feqh'eu 4"
elementary geometry" by Alexander Mcrarlahe'
Or Jfessor OF physics in the Univ ersiiJ oil lexas'
! short technical addresses we're made u! .. q.
! Brashear, who has become well Bn0wn Dy m'hi"S
optical objects and especially leuses HIS snpJees
| were: A method Of preventing bteaKa3e Ill '"o
| nolarizino nelioscope" and " standard dimensions
in astronomical and physical instruments" Professor
! Lewis Boss. OF Albany promised paper On ''"iS
with largo proper motions" but he had not afrFeu
that address will probably not appear before M'hu'y
ABUSY DAY FOR TIE PHYSICISTS.
In Room No 81 of Hamilton Hall, Section u de-
voted the day to the liberation OF different
branches of the department OF ph7Slcs' In" ni,'
paper or the dav begun at 10 o'clock ny pr H. a.
| Nicholson and DR.. f. w. Morley, OF Cleveland VINO
discussed rhe relative velocity of the earth anu me
lnniniterons ether" ThIs was followed by descrlp
| ton OF {" method of telephone communication oe
tween ships at sea-" BY Professor Lucien J. Blake, Of
| Ierre Haute which was in part a. follows:
oon and snrn as to Tie velocity sound
through the water OF Lake Geneva tne inc gu, ~ cn
nicalou between voso, at sea several mrto'' W. ~
hut knows the thonsh NE eHpeimen'
S9a ss TG for >sn1lns b. Telephone
BSy The plan q. WAS 81 to esc ves and to be
under surface Of tae water In times o. ioS or nsh-
transmitted all direction. through tie wafer h tne
u
sell in addition producng apparatus would qS
Icyioi WIN "a nr s yns arPyn from neisho,r
ing vessels All OF ms rrinener whe 40 oo' w NJ
n mod wafer was heard distinctly IS It gos,loe to
ssnS thu hsSa prod aPPsrsn
andeT water ami rom 10 egnE miles
From the from Other .ounis
or less present gnder valet sgh as IRON Of a and
ana was 10 PROV means "i eI1rn%
cOmmu uicaiiOn while simple universal cole ~on lnl Az
/ "A !
ship Father han TACO rect % 81 hef b as o.
The Sound would prove excellent genera saiesa4ra
w ne yI Win snbn@o sed bells wSch could be rang
The shore necessary silin craft both large And
would rave 3sS ana 1es an aSeT %S6
afford sufficient limits Tor protection 10
believed ha, sufficient has Sse9 a29e 9o s"G S to
practical scheme vii lie probably IA ne Tel phone
Nv Az ;setoI in 0ctoer 1855 signal, transmitted
aid received one and cneha miles 90 o Io S5n. o. the
river operators were ont Of each other, sgn
| with fair disiinctness through the telephone.
| Dr. Nicholson and DIR Morley then discussed g.
Method for Making the Wave Length OF sodium Light
| the Actual aud Practical Standard OF Length" rms
paper caused considerable enthusiasm IN the section
IN, Importance Of the paper lay the fact that no nat
ural standard has ever been found. except THIS one
which will he unvarying standard to refer 10 Ihis
standard was obtained by sliding rejecting mirror
through measured space and counting the number OF
interference fringes produced By the notion iudr,ang
number Of wave Lengths. and taking his IengIh As
unit of measurement To prevent the tcmpcIaie N,Il
nth he
The idea was novel and satisfactory that TOOK the
audience by and Professor w. A. Rogers VINO mas
made exact measurement OF standards OF lenglh spc
cialty declared that IL went 10 me p"Von VI NJ 81.
heart" The society Inundated voted to recruitment 10
tigaiion md ultimately produce stan lard unit OF
length which should be known as the American As'oci
ton Unit.
The last paper Of the morning read by william A.
upon the Determination OF the inyarahihty o.
the Coefccnts of Tx panson OF Baileys Metal OF Jes
sups eel and OF Chance Sons glass; between the
| limits of-3o and x97o f.. 81, , 49,,
papers, one upon A Method Of Examining Magnetic
Double Circular Keirsclion" aud the Other upon fns
Professor W. f. Magic OF Princeton, T. j.. then read
paper on the Measurement OF Surface Tension OF
Liquids The other papers of the afternoon were:
tolor-blindness of Railway EmPoyes" by William am
the second Law OF Tnernody n"mios by Professor
Bsyoson %90 s source Of sognd Of Fog signals
by Professor A. g. johnson and the " e'nihan9n Oh
OF pa apdo % m the Years is775
and ls791s83." by Professor W. A. Rogers OF water,
Coils"
| WHAT THE CHEMISTS TALKED ABOUT
Section met in Room No. % Hamilton Hall, to con-
slider the subject OF Chemistry Professor L. NJ Norton
OF Boston, read paper The Fatty Acids Of the Dry
ing Oils" in winch noleic acid first discussed. and
the probability that possesses the symbol C H'4 ga was
| erplained The author then showed that the fatty
acids OF the drying oils are either volatile in yacuo
or give volatile products The properties OF the volatile
praduct btsined from lnoec acid were gwen TO-
gether with the analysis and similar series of expert
mania upon rIcnoleic acid also described. The
cuson was that method OF examining these drying
acids will shed much light upo1 tue competition OF the
drying oils. ,,.- ,.,-,.
Professor Arthur l.. Greene. OF Purdue University Y,
OF LAFAYETTE Ind then presented &" Process for the
Separation OF Aikaloda Poisons, for Students Use,
which was follows:
The material to DO examined having been put into An
eyauoratlng dish pieces Then add about
eausi buk Mako distinctly but not strongly acid
with diluted sulpnurir acid Digest waer BATH about
thirty while hot Digest again about hfIeen
Minutes th about equal bulk OF alcohol filter hie
the ltlates Make lust slightly alkaline WIN a
OF potassium hydrse EvapOrdte water bath 10
a syrup Dissolve a small amount Of waer acduated with
the residue with little
To smal apply the
general akaoda reagents 10 zee II any
| o1L.ln leu